Frédéric Bérat 9ef37798fa
test: Fix and stabilize tst-wcsmbs-clone-overflow test ...
The test tst-wcsmbs-clone-overflow was initially added to tests-static.
However, this causes the test to be unstable because gconv modules
dynamically load libc.so. Any discrepancy between the statically linked
version and the dynamically loaded one can lead to a crash.
By removing the test from tests-static, it relies on dynamic linking,
safely bypassing the dlopen crash. Since the test is now dynamically
linked, it cannot use the internal thread-local symbol
_NL_CURRENT_DATA(LC_CTYPE) because _nl_current_LC_CTYPE is hidden in
libc.so, leading to undefined references. Thus, the test now uses
newlocale and uselocale, safely extracting the locale data from the
returned locale_t object.
Furthermore, using newlocale requires the gconv-modules configuration to
be built and available so that the ISO8859-1.so module can be
dynamically loaded. Otherwise, glibc falls back to the built-in C locale
conversions, leaving __shlib_handle as NULL and silently bypassing the
reference counter increment.
A new Makefile fragment, gen-gconv-modules.mk, is introduced to ensure
the gconv-modules are built before the test runs, and an explicit check
for __shlib_handle != NULL is added to the test.
Reviewed-by: Carlos O'Donell <carlos@redhat.com >
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Frédéric Bérat
9ef37798fa